Adjustable wick-raiser.



PATENTED JULY 7, 1903. W. W. BRADLEY. ADJUSTABLE `WICK BAISER.

APPLIOATION FILED APB. 27, 1903.

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UNITED STATES Patented .Tuly '7, 1903. f

PATENT OFFICE.

WILLIAM- w. BRADLEY, OF wATERBURY, CONNECTICUT, AssICNORTO THE PLUME ANDATwOOD MANUFACTURINGr COMPANY, OF wATEREURY, CONNECTICUT, A CORPORATIONOF CONNECTICUT.

ADJUSTABLE WICK-BAISER.

SPECIFICATION forming part of Letters Patent No. 733,132, dated July '7,1903.

Application led April 27, 1903. Serial No.'l54,508. (No model.)

To @ZZ wiz/m it may concern:

Be itknown that I, WILLIAM W. BRADLEY, a citizen of the United States,residing at Wa terbury, in the county of New Haven and State ofConnecticut, have invented an Improvement in Adjustable YVick-Raisers,of which the following is a specification.

My invention relates to a wick-raiser especially adapted for Argandlamps, the same ro having au adjustable function-that is, thepossibility of arresting the movements of the wick and especially theupward movement of the wick at the desired or a predetermined position,according to the height of the flame desired.

In Carrying out my invention I apply to the shaft of the pinion africtionally-held device or friction-clamp, which turns with the saidshaft and pinion and stops against the lamp- 2o body in either one oftwo positions, and lso determines the limits of" movement of the wick.The friction-clamp holds sufficiently tight upon the shaft to arrest themovement of the shaft and theparts actuated thereby;

z5, but the application of force to the shaft when said friction-clampstops at either of its positions against the lamp-body Causes the saidshaft to slip in the friction-clamp, thereby changing the position ofthe clamp with reference to the shaft and at the same time effecting achange in the relation of the wick to the wick-tube.

In the drawings, Figure l is a vertical section and partial elevationthrough the upper portion of the font or lamp-body and the partsadjacent thereto. Fig. 2is a sectional plan at a: x of Fig. l, and Fig.3 is a vertical section through one side ofthe structure approximatelyon the line y y of Fig. 2.

tt represents the wick-tube of the lamp; a', the wick; a?, the font ofthe lamp; l), the airdistributer; c, the central draft-tube, and CZ atube surrounding the wick and provided with series of perforations, anyone of which is adapted to form the rack. These parts are of ordinaryand well-known construction.

e represents the shaft, e the pinions secured thereto and which meshwith the perforations of the tube d for raising and lowering the saidtube d and with it the wick. On 5o the outer end of this shaft c thereis a knurled disk e2 of usual construction to be grasped by the fingers.

2 represents a bearing-bracket connected to and within the font of thelamp and acting as a substantially central or intermediate support forthe shaft c, said shaft having an end bearing 3 in the font and passingthrough the tubular support f, which is secured to the font of the lampand incloses the said shaft 6o for the major portion of its length. Theinner free end of this tube comes into closev proximity with one of thepinions c', while the bearing-bracket 2 comes into close proximity withthe opposite side of the adjacent pinion. Thus the pinions are heldbetween and guided bythe end of thesaid tubular supportf and thebearing-bracket 2.

h represents an adjustable friction-clamp. This device comprises asleeve extending 7o around the shaft with lug extensions, through whichpassesa rivet or screw 4. The lug extensions of this structure do notquite come together, so that the screw which passes freely through oneof said extensions passes into an interiorly-threaded aperture in theother extension and tension applied by the rivet or screw tends to drawsaid lug extensions together, so as to clamp the sleeve portion tightlyupon the shaft c. Suflcient ten- 8o sion could be. applied to the rivetor screw 4 to clamp the sleeve so firmly to the shaft e that it would beimpossible to turn the shaft with relation to the clamp; but this is notthe intention, as sufficient tension is to loe applied to prevent theshaft turning with relation to the clamp upon the application of theordinary pressure or force that would be made in raising and loweringthe wick and in the stoppage or arresting of the movement 9o of theparts connected therewith.

As shown especially in Figs. 1 and 3, it will be noticed that in oneposition said clamping device h comes against the font or body of thelamp adjacent to the tube d, and in the other position after slightlymore than a half-revolution has been given to the shaft e the said partscome against the lamp-body nearer the surface or distant from said tubed. When this friction device h stops in either of these positions, themovements of the tube d and the wick a are arrested and the extent towhich this device permits the shaft e to turn controls the extent ofvertical movement of the wick a.

In the use of the lamp when the wick becomes too low and requires to beraised the shaft is to be turned until said friction device or clamp hcomes against the body of the lamp in the position shown in full linesFig. 3 and dotted lines Fig. l. When in this position, the applicationof force to the shaft causes the same to slip in this friction-clamp inproportion to the force applied and the continuation thereof. as appliedto the shaft and the knul-led head in a circular direction. The Wick isthus raised to the desired height. The release of pressure permits thefriction device to hold justas firmly to the shaft as before and withsufficient force to ordinarily arrest the upward movement of the wick.Should the wick be too high, the further lowering of the same is eectedby applying force to the shaft after the friction device thereon comesinto the dotted position, Fig. 3, the further movement of the shaftcausing the same to slip in the friction-clamp as heretofore and thewick to be carried to a lower point.

This device is exceedingly simple, is easily applied, the extent oftension upon the clamp device may be varied by an ordinary screwdriverturning down the screw 4, and the said friction-clamp may be employed atany convenient place along said shaft Where it is adapted to come intoengagement or contact with the body of the lamp in opposite positions toarrest the movement.

I claim as my invention- A l. In a wick-raiser, the combination with ashaft and a rack and pinion, of a device frictionally held to said shaftand ordinarily adapted to arrest the movement of said shaft in raisingand lowering the Wick, and the relation of which device to the shaft maybe altered by the application of additional force to the shaft foradjusting the position of the wick.

2. In a wick-raiser, the combination with a shaft, a pinion and rack, ofa device surround.- ing, supported by and frictionally held to saidshaft and ordinarily adapted to arrest the movement of the shaft andregulate the eX- treme positions of the Wick, and the relation of whichdevice to the shaft may be altered by the application of additionalforce to the shaft for adjusting the position of the Wick.

3. In a wick-raiser, the combination with the body of the lamp, a shaft,a pinion, suitable bearings for the shaft and a rack engaged by thepinion, of a friction-clamp comprising a sleeve surrounding said shaftand having lug extensions and a device passing through the lugextensions to draw and hold them together and hold the sleeve with forceto the shaft` substantially as set forth.

4. In a wick-raiser, the combination with the body of the lamp, a shaft,a pinion and a rack for raising and lowering the Wick, of atubularsupport surrounding a portion of said shaft and secured to thebody of the font with its inner free end adjacent to the pinion, abearingbracket connected to the body `of the lamp and through which theshaft passes, the said tubular support and bracket coming at theopposite sides of the pinion for guiding the same, a bearing in the bodyof the lamp for the end of the shaft, and a friction-clamp upon andsurrounding said shaft and coming between the bearing-bracket and theend bearing of the shaft and adapted to arrest the movement of the shaftwith the eX- treme movements of the wick, and the relation of whichdevice to the shaft may be altered by the application of additionalforce to the shaft for adjusting the position of the Wick.

Signed by me this 20th day of April, 1903.

XVILLIAM W. BRADLEY. Vitnesses:

J. L. SCOTT, C. W. NoRTHRoP.

